JP2003092899A - Permanent magnet power generating motor with magnetic flux controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a permanent magnetic power generating motor, of which the magnetic flux control device is formed with a protrusion part constituted of a material with high magnetic permeability and a bridge part with low magnetic permeability, and in which the catching power of the magnetic flux from the permanent magnetic member of the magnetic flux control device is increased so as to increase stability and rigidity. SOLUTION: A magnetic flux control device 7 is arranged between a stator 4 and a rotor 3 and the magnetic flux flowing from a permanent magnetic member 5 to combs 10 of the stator 4 is regulated for voltage control. The magnetic flux control device 7 is formed on an annular continuous body constituted of a protrusion part 8, of which the number of the outer periphery sides is the same as that of the combs 10 of the stator 4 and which can be brought into contact with the combs 10 arranged at intervals with a recessed part 12 and has high magnetic permeability, and a bridge 9 with small magnetic permeability of which the inner periphery sides link the protrusion part 8 to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet type generator / motor equipped with a magnetic flux control device including a rotor made of a permanent magnet attached to a rotary shaft and a stator arranged at the outer circumference of the rotor.

[0002]

2. Description of the Related Art In recent years, a power generator / motor having a permanent magnet as a rotor has a high power generation efficiency or a high motor efficiency.
Recently, it has been widely used in industrial equipment because it can be constructed with a simple structure. With regard to generators and motors, the development of technologies that make them compact, have high performance, and have high output has become active, and along with this, it is necessary to diversify the components.

By the way, in the permanent magnet type generator / motor,
Since the magnetic force of the permanent magnet does not change, it is difficult to change the generated voltage or suppress the torque of the electric motor. In the generator, the generated voltage increases proportionally as the rotation speed increases. The reason is that the voltage of the generator is determined by the product of the frequency, the magnetic flux and the number of windings, so the rotation speed of the rotor is a variation function, and the others are constants, so the voltage rises as the rotation speed increases. It will be. This can be expressed by the following formula. U = 4.44 × f × φ × W × KW ₁ where f: frequency, φ: magnetic flux force, W: number of windings, KW ₁ :
Winding factor As shown in the above equation, in the permanent magnet generator / motor, in order to keep the voltage constant when the generator is operating,
A device such as a complicated switching regulator that divides the current of the generated power cannot be used alone. Also, when operating a permanent magnet power generator / motor,
As the number of revolutions increases, the counter electromotive force acts, and the voltage of the electric power that is input against this electric power rises, so the characteristics of the generator / motor are lost.

Conventionally, the high output AC generator / motor disclosed in Japanese Patent Laid-Open No. 7-236260 controls the magnetic flux density according to the rotation speed to appropriately control the amount of power generation. A control ring is disposed between the two so as to be rotatable relative to each other, and a magnetically permeable body that can be brought into contact with and separated from the control ring is provided.

In the permanent magnet type generator / motor, the magnetic flux control device has a magnetic flux control device having the same number of teeth as the comb material inside the stator core in order to control the magnetic flux flowing from the permanent magnet to the stator. By moving the magnetic flux control device in the circumferential direction, the magnetic path resistance is increased and the magnetic force is weakened. The magnetic flux controller has two roles in particular. The first is to collect as much magnetic force of the permanent magnet as possible and pass it through the comb portion of the stator core.
Is to perform magnetic flux control by a gap provided in the middle of the magnetic path.

[0006]

As described above, in the permanent magnet type generator / motor, the success or failure of the magnetic flux control system has an extremely effective effect for its development. In particular, for electric vehicles whose rotation speed fluctuates, such as electric vehicles, which are expected to grow in the future, the above-mentioned increase in magnetic flux density is a very effective performance because the efficiency and torque of generator / motor are improved and the rotation speed is increased. It leads to improvement. In order to satisfy the above contents, it is effective to place a resistor in the magnetic path of the permanent magnet to reduce the magnetic force, but this magnetic flux control is impossible by the usual method. The most effective way to reduce the magnetic force is to provide an air layer in the magnetic path.

In order to solve the above problems, the present inventor has developed a circular magnetic flux control device provided with a chamfer portion, and previously applied for it as Japanese Patent Application No. 2001-75438.
In the permanent magnet power generator / motor, a cylindrical member is formed into a cylindrical shape as a whole by alternately laminating magnetically permeable members each having a rectangular cross section and non-magnetically permeable members arranged between the magnetically permeable members. The chamfer portions are formed at both corners of the member, the chamfer portions are formed at both corners of the comb portion of the stator, and a predetermined amount of clearance is formed between the chamfer portions. Since the comb portion has a rectangular shape and the chamfer portion is formed at the corner portion, when the cylindrical member starts to rotate slightly, the gap between the comb portion and the magnetically permeable member overlaps for a long period of time. The amount of clearance between the two remains almost unchanged, and as the cylindrical member moves further, the magnetic flux begins to move away from the beginning of movement and then suddenly changes.

Normally, the magnetic force of the permanent magnet attached to the rotor flows to the comb portion of the stator core, returns to the comb portion via the yoke located on the outer peripheral side. Since the air gap between the rotor and the comb portion of the stator core has the largest magnetic path resistance in this path, how to reduce the magnetic leakage in this air gap becomes a big problem. Further, the inside of the stator core has an opening for passing the winding wire, but in order to catch the magnetic flux as much as possible, the opening is made small and the area of the comb portion is made large.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an abutment between the comb portion and the magnetically permeable projection portion of the magnetic flux controller as the magnetic flux controller moves. The magnetic flux from the permanent magnet member of the rotor is designed to be well caught by the magnetic flux controller so that the magnetic flux control device can catch the magnetic flux well. In order to maximize the facing area of the magnetically permeable protrusion of the controller to the permanent magnet member, it is formed in a continuous shape in the circumferential direction, and a concave portion is formed on the stator side of the magnetic flux controller to determine the rotor rotation speed. In response to the action, the actuator is operated to swing the magnetic flux control device to control the flow of magnetic flux from the magnetic flux control device to the comb portion of the stator. .

According to the present invention, a rotor having a permanent magnet member rotatably supported in a housing and arranged in a circumferentially spaced manner, and a comb portion fixed to the housing on the outer peripheral side of the rotor and having a winding wound thereon. A stator provided with a slot portion between them, a magnetic flux control device for adjusting voltage by adjusting a magnetic flux that is swingably arranged with respect to the stator between the stator and the rotor, and the magnetic flux control device. The magnetic flux control device has an actuator for oscillating with respect to the stator, and the magnetic flux control device is a projection made of a material having a good magnetic permeability that is capable of coming into contact with the comb portions which are the same in number on the outer peripheral side as the comb portions of the stator and are separated by a recess. Is formed into a ring-shaped continuous body composed of a bridge portion and an inner peripheral side that connect the protrusions to each other and have a structure with a small magnetic permeability, and are adapted to the rotational speed of the rotor. The controls the swing amount of the protrusion, to a permanent magnet generator-motor consisting of controlling the magnetic flux flowing said to comb from the protrusion of the magnetic flux control device for to the comb actuating the actuator by the controller Te.

The protrusion of the magnetic flux control device is configured such that the outer surface thereof can contact the inner surface of the comb portion in a state of being opposed thereto.

The protrusion of the magnetic flux control device is made of a plate material having a good magnetic permeability and a poor magnetic permeability. The good magnetic permeability is the radial direction and the bad magnetic direction is the circumferential direction. It is configured in the structure described above.

The controller operates the actuator when the rotor is at a low speed to perform control such that the protrusion closely aligns with the comb, and as the rotor becomes high speed, the actuator is operated to cause the protrusion to move. Control is performed to move to the slot portion and reduce the area where the protrusion portion and the comb portion are in close contact with each other.

The protrusions of the magnetic flux control device are made of a material having no magnetic permeability and are located between the comb portions of the stator so that the side surfaces of the protrusions and the side surfaces of the comb portions can come into contact with each other. It is configured.

The controller operates to control the actuator by operating the actuator at a low speed of the rotor to bring the protrusion and the comb into a close contact state, and operate the actuator to drive the protrusion at a high speed of the rotor. Control is performed by swinging in the slot portion between the comb portions to increase the clearance amount between the comb portion and the protrusion portion.

In the stator, the comb portions that extend in the radial direction and are arranged at predetermined intervals in the circumferential direction to form the slot portions, and the tip end portion of the comb portion on the rotor side are projected to connect the comb portions to each other. The stator bridge portion, the winding wound around the slot portion between the comb portions on the outer peripheral side of the stator bridge portion, and the ring-shaped yoke pressed into the outer peripheral surface of the comb portion and the winding. There is.

The comb portion is made of a material having a direction of magnetic permeability, and the direction of high magnetic permeability is oriented in the radial direction and the direction of small magnetic permeability is oriented in the circumferential direction.

The controller swings the magnetic flux control device by the actuator so that the product of the rotational speed of the rotor with respect to the stator and the magnetic flux flowing through the comb portion of the stator is constant, and is predetermined. Control is performed to generate a predetermined constant voltage.

In the magnetic flux control device, a strip plate having a rolling direction having good magnetic permeability is cut into an uneven shape perpendicularly to form the uneven strip plate into a circular shape, and the comb portion has good magnetic permeability. In addition, the bridge portion has an oriented structure in which magnetic permeability is small.

In order to smooth the flow of magnetic flux at the boundary between the protrusion and the bridge, the corners of the recess formed in the protrusion of the magnetic flux control device are rounded.

Since this permanent magnet type generator / motor is constructed as described above, when the magnetic flux controller is swung by the actuator according to a command from the controller, the inner peripheral portion of the magnetic flux controller is continuous in the circumferential direction. In the bridge part, the comb part is formed into a circular continuous body, and the bridge part serves as a magnetic flux collecting part, so that there is no escape of magnetic flux from the permanent magnet member of the rotor to the protrusion of the magnetic flux controller having good magnetic permeability. The magnetic force of the
It is possible to allow the magnetic flux to flow to the comb portion of the stator core, and it is possible to control the flow of the magnetic flux from the protruding portion to the comb portion of the stator with high accuracy according to the rotation speed of the rotor. That is, the protrusions of the magnetic flux control device are continuously formed in a crescent shape in which the outer peripheral surface is formed into a concave shape and the inner peripheral side smoothes the flow of magnetic flux, and the protrusions of the protrusions protrude near the center thereof. It faces the comb part.

Alternatively, the protrusions of the magnetic flux control device are formed on the outer sides of the protruding rectangular contact portions with respect to the combs and arranged between the combs, and the combs of the stator core are spaced a predetermined distance from the inside, for example, about 5 mm. At the entrance, there is a bridge connecting the adjacent combs, and a ring-shaped yoke is fitted on the outer peripheral surface of the comb, so the winding to the stator core is rolled up with the comb open. This makes it possible to manufacture the stator easily. Since the rectangular protrusions of the magnetic flux controller are arranged in the gap between the comb portions of the stator core, the contact area between the side surface of the comb portion and the side surface of the rectangular protrusion of the magnetic flux controller is transparent. It can be set to be larger than that in the case where the magnetic protrusions are opposed to each other.

This permanent magnet type generator / motor can efficiently exhibit the performance of magnetic flux control, and when the rotor speed becomes high, the magnetic flux control device can be moved to reduce the magnetic flux flowing to the comb portion of the stator core. . For example, the protrusion of the magnetic flux control device has a small magnetic path resistance when it comes into contact with the comb portion, and the magnetic path resistance is increased by moving the magnetic flux control device to separate the magnetic flux control device to control the amount of air gap. The magnetic flux flowing to the comb is controlled. Also,
On the inner circumference side of the magnetic flux control device, the comb part is formed into a circular continuous body by the bridge part, so the shape retention of the magnetic flux control device is stable, and the bridge part can be formed with a small cross-sectional area. Magnetic flux leakage is reduced and strength and rigidity can be maintained. The width of the rectangle of the magnetic flux control device is formed so that the gap between the comb portions of the stator core can be a predetermined value, for example, 1 mm or more, on both sides of the protrusions of the protrusions, and when the protrusions come into contact with the combs. Form in close contact. When the space between the combs is small, the protrusion is formed in a trapezoidal shape so that the magnetic flux is not saturated between the magnetic flux controller and the comb.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a permanent magnet type generator / motor equipped with a magnetic flux control device according to the present invention will be described below with reference to the drawings. The permanent magnet power generator / motor according to the present invention is, for example, a power generator / motor provided in an engine mounted in a vehicle such as an automobile, a power generator / motor incorporated in an engine of a cogeneration system, an output shaft of a hybrid vehicle engine, or the like. It is suitable to be applied to various types of generators / motors such as generators / motors installed in the vehicle, generators / motors incorporated in turbochargers that recover exhaust gas energy, or generators installed in energy recovery devices. It is also preferable to apply it to the stator of induction machines and DC machines.

An embodiment of a permanent magnet type generator / motor equipped with a magnetic flux controller according to the present invention will be described with reference to FIGS. FIG. 1 is a schematic cross-sectional view showing an embodiment of a permanent magnet power generator / motor equipped with a magnetic flux control device according to the present invention, and FIG. 2 is a transparent part of a stator comb and a magnetic flux control device in the permanent magnet power generator / motor of FIG. FIG. 3 is a cross-sectional view taken along the line I-I of FIG. 1 showing a state in which the magnetic protrusions are aligned, and FIG. 3 shows a part of a state in which the comb portion of the stator and the magnetically permeable protrusion portion of the magnetic flux controller shown in FIG. FIG. 4 is an enlarged cross-sectional view and FIG. 4 is an enlarged cross-sectional view showing a part of a state where the magnetically permeable protrusions face the slot portions of the stator shown in FIG.

The permanent magnet type generator / motor of this embodiment is
A rotor 3 including a housing 1 that houses a rotor 3 and a stator 4, a rotating shaft 2 rotatably supported in the housing 1 via a pair of bearings 13, and a permanent magnet member 5 fixed to the rotating shaft 2. , The stator 4, which is arranged on the outer peripheral side of the rotor 3 and fixed to the housing 1,
From the magnetic flux control device 7 that is swingably attached to the stator 4 on the inner peripheral side of the stator 4, and from the actuator 25 that swings the magnetic flux control device 7 with respect to the stator 4 according to the rotation speed of the rotor 3. It is configured. The housing 1 is composed of, for example, as shown in FIG. 1, a pair of housing main bodies 30 on both sides and a bolt 31 at an intermediate portion connecting the both housing main bodies 30. Further, for example, a belt pulley 45 serving as an input is fixed to one end of the rotating shaft 2 on the rotating shaft 2, and a belt attached to the output shaft of the engine is hung on the belt pulley 45. A cooling fan 46 is attached to the other end of the rotary shaft 2 to radiate heat generated by the rotor 3 and the stator 4. Ventilation holes 28 and 47, through which the cooling air generated by the cooling fan 46 flows, are formed in the magnetic permeability portion 6 of the rotor 3 and the housing 1.

The stator 4 is a thin plate laminated stator core 15 composed of comb-teeth-shaped comb portions 10 spaced apart so as to form slot portions 11 at predetermined intervals in the circumferential direction, and a ring-shaped yoke portion 17 forming an outer peripheral portion. , And a winding 14 wound around the comb portion 10. A magnetic flux control device 7 is arranged on the inner peripheral side of the slot portion 11 and the comb portion 10 in the stator core 15 so as to be in contact with each other and to be swingable with respect to the stator 4. The magnetic flux control device 7 includes the housing 1
Is rotatably or swingably attached to the stator core 15 via a bearing, or is rotatably fitted to the stator core 15 in a contact state without using a bearing.
Can be rotatably attached to. Further, the inner side surface of the comb portion 10 is formed into a chamfer portion 54 whose corners are inclined.

The rotor 3 includes permanent magnet members 5 and permanent magnet members 5 arranged on the outer peripheral surfaces of the magnetically permeable part 6 and the magnetically permeable part 6 provided with ventilation holes 28 for cooling attached to the outer periphery of the rotary shaft 2. 5 is provided with a non-magnetic reinforcing member 16 fixed to the outer peripheral surface thereof. The permanent magnet members 5 are arranged in the circumferential direction so as to alternately have different polarities and extend in the axial direction, and the non-magnetic material 21 interposed between the adjacent permanent magnet plate pieces 20. It consists of and. In addition, the non-magnetic material 21
Is made of a heat-resistant material that does not melt due to the heat generated by the winding 14. Further, the magnetic permeable portion 6 is formed into a cylindrical shape, for example, in which magnetic permeable materials and non-magnetic materials are alternately arranged in the circumferential direction and extend in the axial direction. In this permanent magnet type generator / motor, a fixing nut 33 is screwed into a screw 32 provided on the rotary shaft 2 at one end of a rotor 3 via a pressing plate 34, and the other end is fixed to the rotary shaft 2. A pressing plate 35 and a spacer 29 are provided, and the rotor 3 is fixed at a predetermined position on the rotating shaft 2 by tightening with a fixing nut 33. Also,
A gap 22 that is as small as possible is formed between the magnetic flux control device 7 and the rotor 3.

This permanent magnet type generator / motor is equipped with a magnetic flux controller 7 for adjusting the voltage by adjusting the magnetic flux density arranged between the stator 4 and the rotor 3 so as to be swingable with respect to the stator 4. The device 7 is connected to the stator 4 by the rod 26
Actuator 25 and rotor 3 which are swung via
The controller has a controller that controls the swing amount of the magnetic flux control device 7 in response to the rotation speed of the. The magnetic flux control device 7 includes, in particular, the protrusions 8 made of a material having a high magnetic permeability that can contact the combs 10 of the stator 4 which are the same number as the combs 10 of the stator 4 and are separated by the recesses 12. It is formed into a ring-shaped continuous body composed of a bridge portion 9 having a structure of small magnetic permeability that connects 8 to each other. The magnetic flux control device 7 is
Since it is preferable to form a structure in which magnetic force easily passes through in the radial direction and does not flow in the circumferential direction, the comb portion 10 extending in the radial direction is aligned with the rolling direction PD of the material as shown in FIG. The bridge portion 9 extending in the direction is oriented so as to be positioned in the direction PVD perpendicular to the rolling direction. Further, the ring-shaped yoke portion 17 is made of a material having magnetic permeability and no directivity.

The protrusions 8 of the magnetic flux control device 7 are arranged in the circumferential direction and are formed in a rectangular cross section having a width smaller than the width of the slot 11 between the combs 10 of the stator 4. The outer surface 23 is configured to be capable of contacting the inner surface 24 of the comb portion 10 in an opposed state. Further, the magnetic flux controller 7
In order to smooth the flow of magnetic flux at the boundary between the projecting portion 8 and the bridge portion 9, the concave portion 1 formed in the projecting portion 8 is
Two corners are formed in the R portion 42. An inclined chamfer portion 55 is formed at the outer corner of the protrusion 8.
That is, the protruding portion 8 of the magnetic flux control device 7 is formed in the R portion 42 which is an overhanging portion in which the inner portion on the rotor 3 side is widened in the circumferential direction. Therefore, the bridge portion 9 of the magnetic flux control device 7
Serves as a magnetism collecting unit that smoothes the flow of the magnetic flux from the permanent magnet member 5 and reduces the leakage of the magnetic flux. Comb part 10
By the chamfer portion 54 on the inner peripheral side and the chamfer portion 55 on the outer peripheral side of the protrusion 8, the gap between the comb portion 10 and the protrusion 8 is favorably controlled by the movement of the magnetic flux controller 7.
The magnetic flux can be controlled well.

The controller swings the magnetic flux controller 7 with respect to the stator 4 so that the outer surface 23 of the protrusion 8 is
And the area of contact with the inner surface 24 of the comb portion 10, that is, the contact area, is controlled. When the magnetic flux controller 7 swings relative to the stator 4 according to a command from the controller, the close contact state between the outer surface 23 of the protrusion 8 and the inner surface 24 of the comb 10 is adjusted, and the protrusion 8 of the magnetic flux controller 7 moves to the stator core 15 The magnetic flux flowing to the comb part 10 is controlled. For example, as shown in FIGS. 2 and 3, the controller uses the actuator 25 when the rotor 3 is at a low speed.
Is controlled to bring the abutment portion of the protrusion 8 and the comb portion 10 into an aligned state, and when the rotor 3 is at a high speed, the actuator 25 is activated to move the protrusion portion 8 between the comb portion 10 as shown in FIG. The slot 11 is moved to the slot 11 to control the area facing the comb 10. Further, the controller controls the actuator 25 so that the rotational speed of the rotor 3 with respect to the stator 4, that is, the product of the frequency f and the magnetic flux φ flowing through the comb portion 10 of the stator 4 (= f × φ) becomes constant.
The magnetic flux control device 7 is oscillated by the control to generate a predetermined constant voltage.

The circumferential width of the protrusion 8 of the magnetic flux controller 7 is equal to the circumferential width of the comb portion 10 of the stator 4 or at least about 80%. Protrusion 8
Is formed by laminating magnetic alloy plate materials made of, for example, a Ni—Fe—Mo based permalloy alloy having an excellent relative magnetic permeability. For example, the protruding portion 8 is made of PB permalloy (47Ni-Fe) whose relative magnetic permeability is 10 times or more that of Si steel.
And / or PC permalloy (79Ni-4Mo-Fe)
It is made in. The above permalloy material has a rolling direction P
The magnetic permeability of D is good, and the magnetic permeability is extremely poor in the PVD perpendicular to the rolling direction PD. Utilizing this property, the comb portion in the radial direction, which is the direction in which the magnetic force easily passes, is oriented as the rolling direction PD, and the PB permalloy material and PC permalloy are
When annealed at 1100 ° C, the directionality of magnetic permeability disappears.
Further, in this permanent magnet power generator / motor, the circumferential width of the comb portion 10 of the stator 4 is set to 1.2 to 1.5 times the circumferential width of the protrusion 8 of the magnetic flux control device 7. .

Next, another embodiment of the permanent magnet type generator / motor according to the present invention will be described with reference to FIGS. 5, 6 and 7. 5 is a cross-sectional view taken along the line I-I of FIG. 1 showing a state in which the comb portion of the stator and the projection portion of the magnetic flux control device in the permanent magnet power generator / motor of FIG. 1 are aligned, and FIG.
FIG. 7 is an enlarged cross-sectional view showing a part of the facing state of the comb part of the stator and the protruding part of the magnetic flux control device, and FIG. 7 is an enlarged view showing a part of the facing state of the slot part and the protruding part of the stator shown in FIG. FIG.

In the permanent magnet power generator / motor of this embodiment, the protrusions 18 of the magnetic flux controller 7 are located in the slots 11 between the combs 10 of the stator 4, and the side surfaces 3 of the protrusions 18 are located.
7 and the side surface 27 of the comb portion 10 are configured to be contactable with each other. The comb portions 10 are connected to each other by a stator bridge portion 43 and are configured as an integral structure. Further, in order to smooth the flow of the magnetic flux at the boundary between the protruding portion 18 and the bridge portion 9, the corner portion of the recessed portion 19 formed in the protruding portion 18 of the magnetic flux controller 7 is formed in the rounded portion 42. The stator 4 extends in the radial direction and is arranged at predetermined intervals in the circumferential direction to form the slot portion 11, and a stator bridge for connecting the comb portions 10 to each other by projecting the tip portion 51 of the comb portion 10 on the rotor 3 side. Portion 43, stator bridge portion 43
On the outer peripheral side, the winding 14 is wound around the slot 11 between the combs 10, and the ring-shaped yoke 44 is press-fitted on the outer peripheral surface 52 of the comb 10 and the winding 14.

The stator bridge portion 43 for the comb portion 10
The position of the inner peripheral surface 48 of the magnetic flux control device 7 is set to a position that is pulled outward in the radial direction by the length where the outer surface 49 of the protrusion 18 of the magnetic flux control device 7 is formed, and between the adjacent protrusions 18 of the comb portion 10 and the stator bridge. The inner side surface 48 of the portion 43 forms a void portion 50 through which magnetic flux does not easily pass. Also,
The stator bridge portion 43 prevents the winding 14 wound up in the slot portion 11 from protruding to the rotor 3 side and also prevents leakage of the magnetic flux to the adjacent comb portion 10 due to saturation of the magnetic flux, although not shown. As shown in FIG.

In this embodiment, when the rotor 3 is at a low speed, the controller operates the actuator 25 to actuate the side surface 37 of the protrusion 18 and the comb portion 10 as shown in FIGS.
When the rotor 3 is moving at high speed, the actuator 25 is actuated to move the protrusions 18 into the gaps 50 between the combs 10, that is, in the slots 11 as shown in FIG. The swinging control is performed to increase the clearance amount between the comb portion 10 and the protruding portion 18.

In this embodiment, the stator core 15 of the stator 4 has a comb-shaped yoke 10 press-fitted to the outer peripheral surface 52 of the comb portion 10 and the comb-shaped portion 10 which is formed to have an opening 41 on the outer peripheral side. 44, and a stator bridge portion 43 that connects the comb portion 10. Therefore, before press-fitting the ring yoke 44 into the stator core 15, the winding wire 14 is wound between the comb portions 10, and then the yoke 44 is inserted into the comb portion 1.
If it is press-fitted into the outer peripheral surface 52 of 0, it is possible to easily wind the winding 14 that generates a plurality of system voltages that generate a three-phase current into various winding types such as concentrated winding and / or distributed winding on the stator core 15. You can Stator core 1
The winding 14 wound around the slot portion 11 between the comb portions 10 of 5 is wound with the non-magnetic material 53 such as aluminum or resin material.
Fixed with, and cutting the outer peripheral surface 52 into a circle,
The inner peripheral surface 40 of the ring-shaped yoke 44 is cut to a predetermined inner diameter, and then the ring-shaped yoke 44 is press-fitted into the outer peripheral surface 52 of the comb portion 10 and the non-magnetic material 53 to complete the stator 4. To do. The non-magnetic material 53 is made of a heat-resistant material that does not melt due to the heat generated by the winding 14.

In this embodiment, the stator 4 has the comb portion 10
Are connected at a predetermined interval in a strip shape by a stator bridge portion 43, the stator bridge portion 43 is bent in a circular shape, and the end portions of the stator bridge portion 43 are joined together to form a circular stator core piece. The pieces are laminated in the axial direction to form the stator core 15. Next, the winding 14 is wound around the stator core 15 and then the stator core 1
5 is formed by press-fitting a ring-shaped yoke 44. Specifically, the shape of the comb-shaped array of the comb portions 10 forming the stator 4 is obtained by cutting a linear plate material into strips,
And the stator bridge portion 43 are left, the slot portion 11 and the gap portion 50 between the comb portions 10 are cut off, the stator bridge portion 43 is bent into a circular shape, and the stator bridge portion 43 is formed.
It is formed by joining the ends of each other. Therefore, the stator core 15 is formed of a circular outward-opening comb member in which the comb portions 10 are connected by the stator bridge portion 43, and a ring-shaped yoke 44 serving as a magnetic path cylinder.

Alternatively, the outward-opening comb portion 10 can be manufactured by integrally molding the comb portions 10 arranged so as to be spaced apart in the circumferential direction of the stator bridge portion 43 and extend in the radial direction.
Since the open-comb type comb portion 10 is formed with the slot portion 11 which is an opening portion between adjacent comb portions 10 which is open to the outside, the winding wire 14 extends across the predetermined comb portions 10 and is slotted. The slot portion 11 can be easily wound up through the opening 41 on the outer peripheral side of the portion 11. For example,
In order to wind up the winding wire 14, first, the comb portion 1 is inserted from the inside in the radial direction of the slot portion 11 between the comb portions 10 of the circular outer opening type comb member.
The winding 14 is sequentially wound around the winding portion 0 in the concentrated winding and / or the distributed winding, and then, the winding 14 is wound around the comb portion 10 to the outside of the slot portion 11 in the concentrated winding or the distributed winding.

Next, after winding the winding wire 14 around the slot portion 11 between the comb portions 10 of the circular outward-opening type comb member, the slot portion 11 is filled with the non-magnetic material 53, and the winding wire 14 is covered with the non-magnetic material 5.
Fix with 3 respectively. Next, the comb portion 10 and the non-magnetic material 5
3 and the outer peripheral surface 52 is cut and finished to a predetermined outer diameter. A ring-shaped yoke 44 forming a magnetic path is press-fitted into a circular outward-opening comb member whose outer peripheral surface 52 is machined, and the two are fixed to each other by welding or the like. In this case, although not shown, the ring-shaped yoke 44 can be press-fitted to the outer peripheral tip surface of the comb portion 10 with a soft cylindrical material having excellent magnetic permeability interposed. The circular outward-opening comb member has a comb portion 10
The stator bridge portions 43 are connected to each other, and a stable shape can be maintained. Circular open-type comb member and ring-shaped yoke 4
The stator core 15 composed of 4 has a thin stator bridge portion 43 that connects the comb portion 10 with the magnetic force lines, and the stator bridge portion 43 has the stator bridge portion 43 because the magnetic force saturates immediately. Does not hinder anything.

[0041]

Since the permanent magnet type generator / motor equipped with the magnetic flux control device according to the present invention is constructed as described above, the magnetic flux control device itself is constructed such that the adjacent protrusions are integrally formed by the bridge portions. In addition, the bridge portion improves the catching force of the magnetic flux flowing from the permanent magnet member to the magnetic flux control device, that is, the magnetic attraction force. Further, by forming the boundary portion between the bridge portion and the projection portion of the magnetic flux control device at the R portion, the magnetic flux collected from the permanent magnet member to the bridge portion can smoothly flow from the bridge portion to the projection portion. . Further, when the protrusions of the magnetic flux control device are located in the slots between the combs, when the magnetic flux control device is swung with respect to the combs of the stator, the tip side surface of the combs and the protrusions of the magnetic flux control device are The amount of clearance from the side surface can be immediately and linearly changed, and the magnetic flux passing through the comb portion of the stator can be reliably controlled. For example, it is extremely easy to control to generate a predetermined constant voltage. It is achieved with high accuracy.

Also, in this permanent magnet type generator / motor, prior to press-fitting the ring yoke into the combs, the slots between the combs can be easily and intensively wound from the outside opening,
It is possible to wind up to a desired type such as distributed winding, the number of windings, a plurality of winding groups, etc., it is possible to greatly improve the production efficiency, and it is possible to form a highly reliable stator. In this permanent magnet generator / motor, proper voltage control can be reliably and easily achieved by swinging the magnetic flux control device in response to the rotation speed of the rotor without using a thyristor or transistor as in the past. For example, it is possible to generate a predetermined constant voltage of 100 V, for example, without being affected by the rotation speed of the rotor.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a permanent magnet type generator / motor equipped with a magnetic flux controller according to the present invention.

FIG. 2 is a cross-sectional view of the I-I cross section of FIG. 1 showing an embodiment in which the comb portion of the stator and the protrusion portion of the magnetic flux control device in this permanent magnet power generator / motor are aligned.

FIG. 3 is an enlarged cross-sectional view showing a part of a state where the comb portion of the stator of FIG. 2 and the protrusion portion of the magnetic flux control device are aligned.

4 is an enlarged cross-sectional view showing a part of a state where the comb portion of the stator and the protrusion portion of the magnetic flux control device of FIG. 2 are not aligned.

FIG. 5 is a cross-sectional view taken along the line I-I of FIG. 1 showing another embodiment in which the comb portion of the stator and the protrusion portion of the magnetic flux control device in this permanent magnet power generator / motor are aligned with each other.

6 is an enlarged cross-sectional view showing a part of a state in which the comb portion of the stator and the protrusion portion of the magnetic flux control device of FIG. 5 are aligned with each other.

7 is an enlarged cross-sectional view showing a part of a state where the comb portion of the stator and the protrusion portion of the magnetic flux control device of FIG. 5 are not aligned.

[Explanation of symbols]

1 housing 2 rotation axes 3 rotor 4 stator 5 Permanent magnet members 6 Magnetic permeability part 7 Magnetic flux controller 8,18 protrusion 9 Bridge section 10 Comb 11 slot 12,19 recess 13 bearings 14 windings 15 Stator core 16 Reinforcement member 17 Ring-shaped yoke 20 Permanent magnet plate piece 21 Non-magnetic material 22 Gap 23 Outer surface of protrusion 24 Inner surface of comb 25 actuators 27 Side of comb 28,47 ventilation holes 37 Side of protrusion 40 Inner surface of yoke 41 Opening between combs 42 R section 43 Stator bridge 44 Ring-shaped yoke 48 Inner peripheral surface of stator bridge 49 Outer surface of protrusion 50 void (slot) 51 tip of comb 52 Outer peripheral surface of comb and slot

Claims (11)

[Claims] 1. A rotor having a permanent magnet member rotatably supported by a housing and arranged in a circumferentially spaced manner, between a comb portion fixed to the housing on the outer peripheral side of the rotor and having a winding wound thereon. A stator provided with a slot portion, a magnetic flux control device for adjusting voltage by adjusting a magnetic flux swingably arranged with respect to the stator between the stator and the rotor, and the magnetic flux control device in the stator. The magnetic flux control device includes a protrusion made of a material having a good magnetic permeability that is capable of contacting the comb portions separated from each other by a concave portion and having the same number of actuators as those of the stator. The inner peripheral side is formed into a ring-shaped continuous body composed of a bridge portion having a structure having a small magnetic permeability that connects the protrusions to each other, and is controlled according to the rotation speed of the rotor. A permanent magnet power generator / motor, comprising: operating the actuator by a roller to control the amount of swing of the protrusion of the magnetic flux controller with respect to the comb, and controlling the magnetic flux flowing from the protrusion to the comb. 2. The permanent magnet power generator according to claim 1, wherein the protrusion of the magnetic flux control device is configured such that an outer surface of the protrusion is in contact with the inner surface of the comb so as to face the inner surface of the comb.
Electric motor. 3. The projection of the magnetic flux control device is made of a plate material having a good magnetic permeability direction and a poor magnetic permeability direction, wherein the good magnetic permeability direction is the radial direction and the bad magnetic permeability direction is the circumferential direction. 2. A structure having a vertically oriented structure.
Alternatively, the permanent magnet power generator / motor according to item 2. 4. The controller operates the actuator when the rotor speed is low to control the protrusion to closely align with the comb, and operates the actuator as the rotor speed increases to operate the protrusion. The permanent magnet power generator / motor according to claim 1, wherein control is performed to move the portion to the slot portion to reduce an area where the protrusion portion and the comb portion are in close contact with each other. 5. The protrusion of the magnetic flux control device is made of a material having no magnetic permeability and is located between the combs of the stator, and a side surface of the protrusion contacts a side surface of the comb. The permanent magnet power generator / motor according to claim 1, which is configured so as to be possible. 6. The controller controls the actuator so as to bring the protrusion and the comb into a close contact state when the rotor is at a low speed, and activates the actuator when the rotor is at a high speed for the protrusion. 6. The permanent magnet power generator / motor according to claim 5, wherein the control is performed so as to swing in the slot portion between the comb portions to increase a clearance amount between the comb portion and the protrusion portion. 7. The stator comprises the comb portion extending in the radial direction and arranged at a predetermined interval in the circumferential direction to form the slot portion, and the tip end portion of the comb portion on the rotor side is projected so that the comb portions are mutually formed. A stator bridge portion to be connected, the winding wound around the slot portion between the comb portions on the outer peripheral side of the stator bridge portion, and a ring-shaped yoke pressed into the outer peripheral surface of the comb portion and the winding wire. The permanent magnet power generator / motor according to claim 5 or 6, which comprises: 8. The comb portion is made of a material having a direction of magnetic permeability, and the direction of high magnetic permeability is oriented in the radial direction, and the direction of small magnetic permeability is oriented in the circumferential direction. The permanent magnet power generator / motor according to claim 5 or 6. 9. The controller swings the magnetic flux control device by the actuator so that the product of the rotational speed of the rotor with respect to the stator and the magnetic flux flowing through the comb portion of the stator becomes constant. A permanent magnet power generator / motor equipped with the magnetic flux control device according to any one of claims 1 to 6, wherein the permanent magnet power generator / motor is configured to generate a predetermined constant voltage. 10. The magnetic flux control device cuts a strip plate having a rolling direction with good magnetic permeability into an uneven shape perpendicular to the strip plate,
10. The concavo-convex strip plate is formed into a circular shape, and the comb portion is configured to have an excellent magnetic permeability, and the bridge portion is configured to have an oriented structure having a small magnetic permeability. Permanent magnet type generator / motor described. 11. In order to smooth the flow of magnetic flux at the boundary between the protrusion and the bridge, the corners of the recess formed in the protrusion of the magnetic flux control device are rounded. Claims 1 to 10 consisting of
The permanent magnet power generator / motor according to any one of 1.